RFC 2 (rfc2) - Page 2 of 10
Host software
Alternative Format: Original Text Document
RFC 2
1b1c The primary link is treated like a teletype connected over
a normal data-phone or direct line by the remote HOST, i.e. the
remote HOST considers a primary link to be a normal teletype
user.
1b1d The primary link is used for passing (user) control
information to the remote HOST, e.g. it will be used for
logging in to the remote host (using the remote hosts standard
login procedure).
1c Auxilliary Links
1c1 A user program may establish any number of auxilliary links
between itself and a user program in a connected HOST.
1c1a These links may be used for either binary or character
transmission.
1c1b Auxilliary links are local to the sub-system which
establishes them, and therefore are closed when that subsystem
is left.
2 MANIPULATION OF LINKS
2a Control links
2a1 The control link is established at system load time.
2a2 The status of a control link may be active or inactive
2a2a The status of the control link should reflect the
relationship between the HOSTs.
2b Primary Links
2b1 Primary links are established by a user or executive call to
the monitor
2b1a The network identification number of the HOST to be linked
to must be included in the call
2b1b An attempt to establish more than one primary link to a
particular HOST will be regarded as an error, and the request
will be defaulted
2b1c Standard Transmission Character Set
Duvall